Microsoft is to change the license for its process for developing secure software. In future, the company's Security Development Lifecycle (SDL) will be available under a Creative Commons license (Attribution-NonCommercial-ShareAlike 3.0 Unported). This should make it easier for others to use and distribute the principles behind SDL and for programmers to integrate SDL components into their own development processes. This has not previously been possible, as documentation and other SDL materials were under an exclusive Microsoft license which precluded such use.

The company hopes that the change will lead to more developers utilising the Microsoft process for developing software more securely across the entire product lifecycle. SDL can trace its origins back to a 2002 Bill Gates memo on "trustworthy computing". The resulting programme was intended to make security an integral part of the company's software development process and make its products more persistently secure. All Microsoft software since Windows Vista has been developed in accordance with SDL.